HIP6004ACB INTERSIL [Intersil Corporation], HIP6004ACB Datasheet - Page 11

• Manufacturer Part Number: HIP6004ACB
• Description: Buck and Synchronous-Rectifier (PWM) Controller and Output Voltage Monitor
• Manufacturer: INTERSIL [Intersil Corporation]

Schottky Selection
Rectifier D
swing during the dead time between turning off the lower
MOSFET and turning on the upper MOSFET. The diode
must be a Schottky type to prevent the lossy parasitic
MOSFET body diode from conducting. It is acceptable to
omit the diode and let the body diode of the lower MOSFET
clamp the negative inductor swing, but efficiency will drop
one or two percent as a result. The diode's rated reverse
breakdown voltage must be greater than the maximum
input voltage.
FIGURE 10. UPPER GATE DRIVE - DIRECT V
HIP6004A
-
+
+12V
2
is a clamp that catches the negative inductor
V
CC
GND
BOOT
UGATE
PHASE
LGATE
PGND
2-72
Q1
Q2
+5V OR LESS
D2
CC
NOTE:
V
NOTE:
V
G-S
DRIVE OPTION
G-S
V
V
CC
CC
-5V
HIP6004A